The earliest version of this that I am aware of was called ThirdVoice [1][2]. There have been many iterations since. They do not last long because of the free

The earliest version of this that I am aware of was called ThirdVoice [1][2]. There have been many iterations since. They do not last long because of the free form comments. People fill them with spam, links to illegal content, threats, defamation and worse. There is also the issue of scalability. Hosting comments for "all the things" gets big really fast. The voting would get gamed almost immediately. There is also the issue of privacy if your addon reacts real time with sites that people visit vs. having to push a button to fetch comments/stats. This same issue crops up with OCSP and DoH. Less of a problem today is DDoS. You could probably get Cloudflare to absorb some of the vitriol from your enemies. It's also easier today to build a legal team for internet companies now vs early 00's. If you are doing this I would be curious to see the stats on comments total, comments on average per domain and how much time either you or automation have to spend removing comments and adjusting votes that were submitted by bots. Are you planning on building a public stats page? [1] - https://en.wikipedia.org/wiki/Third_Voice https://en.wikipedia.org/wiki/Third_Voice [2] - https://www.wired.com/2001/04/third-voice-trails-off/ https://www.wired.com/2001/04/third-voice-trails-off/